I am thinking about upgrading some major parts on my system and just want to see if I can use my current Case and PS.

Case http://www.newegg.com/Product/Produc...82E16811144026

PS http://www.newegg.com/Product/Produc...82E16817139002

I am really close to just ordering an i7, mobo, 6g of ram and a vid card. Looks like i can get these 4 parts for ~$900.

cpu http://www.newegg.com/Product/Produc...82E16819115202
mobo http://www.newegg.com/Product/Produc...82E16813131359
Ram....6GB of something
Vid Card.....?

I am not sure exactly what type of ram or vid card I should get. I dont mind having all vid setting in wow on min with main window distance settings up a little. So for the price, is GTX 750s a good buy?....compared to the 850s? I am guessing if there is anything i could upgrade in a year or two it would be the vid card, so atm im leaning on going for a mid range card that will stil put out to run 5 wows.

Will these parts fit in my case? And will 650W be enough to push these parts?

Thanks.